#! /bin/sh

# $Id$
#*********************************************************************
#
# make-fai-nfsroot -- create nfsroot directory and add additional packages
#
# This script is part of FAI (Fully Automatic Installation)
# (c) 2000 by Thomas Lange, lange@informatik.uni-koeln.de
# Universitaet zu Koeln
#
#*********************************************************************
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
# 
# A copy of the GNU General Public License is available as
# `/usr/share/common-licences/GPL' in the Debian GNU/Linux distribution
# or on the World Wide Web at http://www.gnu.org/copyleft/gpl.html.  You
# can also obtain it by writing to the Free Software Foundation, Inc.,
# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#*********************************************************************

# Thomas Lange, Universitaet Koeln, 2000

# configuration of some packages will need some interactive input
# lilo, netbase,... will not be set up correctly, but that doesn't matter
# apt-get must been working on your server (sources.list must be OK)

PATH=/bin:/sbin:/usr/bin:/usr/sbin

while getopts v opt ; do
        case "$opt" in
        v) verbose=1 ;;
        esac
done

. /etc/fai.conf

conffile=$NFSROOT/etc/rcS_fai.conf
aptconf=$LIBFAI/etc/apt.conf.nfsroot

# Additional packages that are install to nfsroot
packages="$NFSROOT_PACKAGES perl-5.005 dhcp-client file rdate cfengine bootpc wget rsh-client less ssh dump ext2resize raidtools2 lvm strace expect5.31"

export DEBIAN_FRONTEND=Noninteractive

if [ "$verbose" ]; then
	devnull=/dev/tty
else
	devnull=/dev/null
fi

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
setup_ssh() {

    # enable root login
    perl -pi -e 's/PermitRootLogin no/PermitRootLogin yes/' $NFSROOT/etc/ssh/sshd_config
    if [ -f "$SSH_IDENTITY" ]; then
	mkdir -p -m 700 $NFSROOT/root/.ssh
	cp -p $SSH_IDENTITY $NFSROOT/root/.shh/authorized_keys
	echo You can log in install clients without password using $SSH_IDENTITY
    fi
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
copy_fai_files() {

    perl -pi -e "s/^root::/root:${ROOTPW}:/" etc/passwd
    mkdir -p $NFSROOT/fai/fai_config $NFSROOT/usr/share/fai
    cp -p $LIBFAI/sbin/dhclient-script $LIBFAI/etc/dhclient.conf $NFSROOT/etc
    cp -p $LIBFAI/sbin/* $NFSROOT/sbin
    cp -p /usr/share/fai/* $NFSROOT/usr/share/fai
    cp -p $LIBFAI/etc/apt.conf $NFSROOT/etc/apt
    cp -p /usr/lib/perl5/Debian/Fai.pm $NFSROOT/usr/lib/perl5/Debian/
    cp -p /etc/fai.conf $NFSROOT/etc
    echo "# rcS_fai.conf -- created by make-fai-nfsroot" >> $conffile
    [ "LOGUSER" ] && echo "export LOGUSER=$LOGUSER" >> $conffile
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
create_nfsroot() {

    mkdir -p $NFSROOT
    cd $NFSROOT
    get_basetgz
    echo -n "Unpacking " ; ls /tmp/base?_?.tgz
    tar zxpf /tmp/base?_?.tgz
    mknod dev/boot255 c 0 255

    # hoaks some packages
    touch etc/fstab etc/raidtab # dump and raidtool2 needs these files
    mkdir -p lib/modules/`uname -r`             # dirty trick to hoax lvm
    touch lib/modules/`uname -r`/modules.dep    # dirty trick to hoax lvm
    mkdir -p $NFSROOT/etc/ssh ; touch $NFSROOT/etc/ssh/NOSERVER

    upgrade_nfsroot
    copy_fai_files

    # set timezone
    rm -f $NFSROOT/etc/localtime
    cp -dp /etc/localtime $NFSROOT/etc
    cp -dp /etc/timezone $NFSROOT/etc

    # make little changes to nfsroot, because most file systems are read only
    rm -rf etc/mtab etc/apt/sources.list var/run
    mv $NFSROOT/etc/init.d/rcS $NFSROOT/etc/init.d/rcS.orig
    ln -s /proc/mounts $NFSROOT/etc/mtab
    ln -s /tmp/var/run $NFSROOT/var/run 
    ln -s /tmp/etc/resolv.conf $NFSROOT/etc/resolv.conf
    ln -s /sbin/rcS_fai $NFSROOT/etc/init.d/rcS

    # kernel with modules do not log loading of modules
    rmdir $NFSROOT/var/log/ksymoops/
    ln -s /dev/null $NFSROOT/var/log/ksymoops

    setup_ssh

    cat >$NFSROOT/etc/rcS.d/S01fai_abort <<EOF
    #!/bin/sh
    echo FAI: installation aborted.
    echo reboot with: faireboot
    echo or after a logout
    sh
    cd /
    umount -ar
    reboot -dfi
EOF
    chmod a+rx $NFSROOT/etc/rcS.d/S01fai_abort
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
upgrade_nfsroot() {

    echo "Upgrading $NFSROOT"
    {
    apt-get -c $aptconf update
    apt-get -c $aptconf check
    chroot $NFSROOT mount -n -t proc proc /proc
    rm -rf $NFSROOT/etc/pcmcia $NFSROOT/etc/apm
    apt-get -c $aptconf -y remove pcmcia-cs </dev/null

    # because start-stop-dameon must be faked do it here
    apt-get -c $aptconf -y install dpkg </dev/null
    cp -p $LIBFAI/sbin/start-stop-daemon $NFSROOT/sbin

    apt-get -c $aptconf -y upgrade </dev/null
    } > $devnull
    echo "Adding additional packages to $NFSROOT:"
    echo "$packages"
    {
    apt-get -c $aptconf -y --fix-missing install $packages </dev/null
    chroot $NFSROOT umount -n /proc
    } > $devnull
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
get_basetgz() {

    [ -f /tmp/base?_?.tgz ] && return
    case $BASETGZ in
	ftp:*|http:*)
	    echo "Getting $BASETGZ via wget. This may take some time."
	    wget -q -P/tmp $BASETGZ
	    ;;
	*) cd /tmp ; ln -s $BASETGZ
	    ;;
    esac
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
install_kernel_nfsroot() {
    rm -rf /boot/*-$KERNELVERSION $NFSROOT/lib/modules/$KERNELVERSION
    dpkg -x $KERNELPACKAGE $NFSROOT
    chroot $NFSROOT depmod -a -F /boot/System.map-$KERNELVERSION
}
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

if [ -d $NFSROOT/fai ]; then
    echo $NFSROOT already exists. Removing $NFSROOT
    umount $NFSROOT/dev/pts 2>/dev/null
    rm -rf $NFSROOT
fi
    create_nfsroot
    install_kernel_nfsroot
    mk3comimage $NFSROOT/boot/vmlinuz-$KERNELVERSION /boot/fai/installimage $NFSROOT/dev/nfs

exit 0